Re: [RFT] Testing 1.22

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On Sat, 2021-07-17 at 18:36 +0200, Michal Suchánek wrote:
> On Sat, Jul 17, 2021 at 04:14:54PM +0100, Luca Boccassi wrote:
> > On Sat, 2021-07-17 at 17:10 +0200, Michal Suchánek wrote:
> > > Hello,
> ...
> > > So this libbpf comes from the kernel, and there is a separate github
> > > repository for libbpf.
> > > 
> > > Should the kernel ship its own copy of the library?
> > > 
> > > Seeing that the one in the kernel is 0.3.0 and the required one for
> > > dwarves is 0.4.0 maybe the one in the kernel needs updating if it needs
> > > to be shipped there?
> > > 
> > > I wil file a bug to build the libbpf from the git repo instead of the
> > > kernel to make the openSUSE libbpf less baroque.
> > 
> > They provide the same ABI, so there should be only one in the same
> > distro, the kernel package shouldn't ship its own copy if there's a
> > standalone package built from the standalone sources.
> > If you are asking why the sources are still present in the upstream
> > kernel, I don't know - maybe historical reasons, since that's where it
> > came from? But AFAIK the majority of distros don't use that anymore.
> 
> FWIW the libbpf from github does not work for me with LTO (GCC 11).
> 
> Also there is a problem that LIBDIR is /usr/lib64 on arm64 ppc64(le) and
> s390x but the library gets installed into /usr/lib by default. For some
> reason x86_64 is the only 64bit arch that works out of the box.
> 
> Thanks
> 
> Michal

I don't know about LTO - but for LIBDIR, you can use LIBSUBDIR= like we
do in Debian: 
https://tracker.debian.org/media/packages/libb/libbpf/rules-0.4.0-1

-- 
Kind regards,
Luca Boccassi

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